anaiahbrown anaiahbrown
  • 02-11-2018
  • Mathematics
contestada

QUICK!!
What are the roots of this equation?
x2 − 2x + 3 = 0

QUICK What are the roots of this equation x2 2x 3 0 class=

Respuesta :

jimrgrant1 jimrgrant1
  • 02-11-2018

C

one way to solve is to use the method of completing the square

subtract 3 from both sides

x² - 2x = - 3

add ( half the coefficient of the x-term )² to both sides

x² + 2(- 1 )x + 1 = - 3 + 1

(x - 1)² = - 2

take the square root of both sides

x - 1 = ± √(- 2) = ± i√2 ( add 1 to both sides )

x = 1 ± i√2 → C


Answer Link

Otras preguntas

what is a tendon and a ligament
Factor tree for number 119
Solve the equation 6x=2x+40
Can a change in matter take place in which energy is neither released nor absorbed?
Who was John Howe ( American revolutionary war) and why did he matter to our history?
Geologists have divided Earth's history into time units, which are largely based on?
Dave earns $150 per week plus 3.8% commission.he sold $4175.68 in the month of February. What is his gross monthly earning for february?
Going into a recent election, only about 62% of people old enough to vote were registered. In a community of about 55,200 eligible voters, how many people were
what is 5,900 round to the nearest thousand
Tell whether the set is closed under the operation indicated.If not closed, provide a counterexample.1.) integers under addition                            2.)